TC220 Field Monitoring

Field Monitoring in Geomechanics

It is well known that the real behaviour of geomechanical structures quite often differs from that predicted by numerical analyses carried out at the design stage, even though sophisticated computer programs are often used. This discrepancy may be simply because of the various uncertainties of geomaterials. In order to fill the gap between real and predicted behaviour of geomechanical structures, field monitoring is carried out to verify the input data used in the original design, as well as to assess the integrity of the structures during construction. Nowadays, there are many different monitoring techniques available. However, it should be noted that the field monitoring data are only numbers unless they are properly interpreted.

TC220 helps bring together practitioners, academics and suppliers, to exchange knowledge on field monitoring. For more information visit our website at and use the publications below.

Useful Reading List

Client guide to instrumentation and monitoring. Published by the Chartered Institution of Civil Engineering Surveyors for the Survey Liaison Group, London, 2017.

EN ISO 18674-1:2015 Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation. Part 1: General rules. Published by CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels.

EN ISO 18674-2:2016 Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation. Part 2: Measurements along a line - extensometers. Published by CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels.

EN ISO 18674-3:2017 Geotechnical investigation and testing — Geotechnical monitoring by field instrumentation. Part 3: Measurements across a line - inclinometers. Published by CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels.

Geotechnical instrumentation for monitoring field performance. J. Dunnicliff. Published by J. Wiley & Sons Inc, New York, 1993. ISBN: 0-471-00546-0.

Geotechnical Instrumentation News. Bi-Tech Publishers Ltd, Canada.

ICE Manual of Geotechnical Engineering. J. Burland, T. Chapman, H. Skinner and M. Brown. Chapter 94: Principles of geotechnical monitoring. J. Dunnicliff, W.A. Marr and J. Standing Chapter 95: Types of geotechnical instrumentation and their usage. J. Dunnicliff        Published by ICE Publishing, London, 2012. ISBN: 9780727736529.

Monitoring Underground Construction. The British Tunnelling Society. Published by ICE Publishing, London, 2011. ISBN: 9780727741189.

Use of Inclinometers for Geotechnical Instrumentation on Transportation Projects, State of the Practice. Transportation Research Circular Number E-C129,  October 2008. Transportation Research Board, Washington, DC.

Papers for 2015 International Symposium on Field Measurements in Geomechanics are now available to download

The proceedings of the 9th International Symposium on Field Measurements in Geomechanics are now available to download from the Australian Centre for Geomechanics’ website. Visit the Symposia page of the TC220 website to find the link and other news.

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ISO 18674 Part 4 Measurement of pore water pressure: Piezometers is published

There is a new ISO Standard for the measurement of pore water pressure by piezometers. In it you will find recommendations for guidance on types of piezometers and how to install them. The standard can be purchased from

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TRB Webinar: When to Use Fully Grouted Piezometer Installations

On 8th July 2020 the Transportation Research Board (TRB) will host a webinar on "When to Use Fully Grouted Piezometer Installations." 

Webinar agenda and presenters

  1. Introduction, implementation and application, field examples, and research: Joel Swenson,&n

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ISSMGE John Dunnicliff Honour Lecture on Field Monitoring in Geomechanics

TC220 is very pleased to announce a new Honour Lecture named after John Dunnicliff and on the subject of Field Monitoring in Geomechanics.

John is a self-employed consulting engineer, specializing in geotechnical and structural monitoring. He has taken the lead role in teachin

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New International Standard on Total Pressure Cells

The following International Standard has just been published:

BS EN ISO 18674-5:2019. Geotechnical Investigation and Testing. Geotechnical Monitoring by Field Instrumentation. Stress Change Measurements by Total Pressure Cells (TPC).

Purchase it here.

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11th International Symposium on Field Monitoring in Geomechanics

The 11th International Symposium on Field Monitoring in Geomechanics will take place from 4th to 8th September 2022 at Imperial College London. SAVE THE DATE.

Visit the website to register you interest, submit abstracts by 17th Janaury 2022 and find

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TC220 at ECSMGE in Iceland

Andrew Ridley (Chair) and Paul Burton (Secretary) of TC220 Field monitoring in Geomechanics are both attending the 17th European Conference on Soil Mechanics and Geotechnical Engineering in Iceland next week and would like to hear from anyone who is interested in this new Technic

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New Draft International Standard on Piezometers is available for public comment

A new draft international standard prEN ISO 18674-4 - Geotechnical investigation and testing -- Geotechnical monitoring by field instrumentation. Part 4: Measurement of pore water pressure: Piezometers is available for public comment until 23 September 2019. Anyone who is interes

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Field Monitoring in Geomechanics deals with assessing the performance of engineering structures using instrumentation and other related information. The applications include dams and embankments, structures and foundations, transport infrastructure including tunnels and other underground openings,  open cut and underground mines, natural slopes, land reclamation, repositories for industrial or nuclear waste and offshore structures.

The principal aims of TC220 are:

1.       To organise specialty conferences, symposiums, workshops and short courses dedicated to the subject of field monitoring in geomechanics. To encourage the involvement of a wide range of geo-professionals in these events.

2.       To encourage the preparation of keynote lectures, state-of-the-art lectures including on new technologies, general reports for conferences organised by the International Society, regional conferences and conferences organized by Member Societies.

3.       To promote the inclusion of structural and geotechnical monitoring in universities and at conferences and meetings of other international bodies, thereby encouraging a common culture of learning through field monitoring.

FMGM is an international symposium held every four years since 1977.  TC220 will ensure that this tradition continues and will encourage ISSMGE members to participate in future FMGM Symposia.

TC220 will develop a website dedicated to field monitoring in geomechanics. This will be implemented with the support of companies involved in delivering instrumentation equipment and field monitoring services. The website will be used as a point of reference for disseminating information on monitoring best practice and as a forum for presenting case histories and lessons learned, including on-going discussion groups (blogs).

TC220 will assist with the technical programs of international and regional conferences organized by the ISSMGE.

TC220 will provide fora for all of those involved in the use of field instrumentation, such as manufacturers, installers, design consultants and owner/operators, to improve collective knowledge, support decision making and foster a common culture. This will be done mainly through FMGM Symposia and the website, but also by encouraging universities to include monitoring in curricula and by increasing field monitoring content at conferences and meetings of other international bodies.

# Type Full Name Country
1 Chair Andrew Ridley United Kingdom
2 Vice Chair Giorgio Pezzetti Italy
3 Secretary Paul Burton New Zealand
4 Nominated by TC Chair Peter Lamb Australia
5 Nominated by TC Chair Paolo Mazzanti Italy
6 Corresponding Member Marco Rosone Italy
7 Corresponding Member Gianpiero Russo Italy
8 Corresponding Member Filippo Soccodato Italy
9 Nominated Member Chih-ping Lin Chinese Taipei
10 Nominated Member Kenichi Soga United States
11 Corresponding Member Daniele Fornelli United Kingdom
12 Corresponding Member Duncan Nicholson United Kingdom
13 Nominated Member Anil Yunatci Turkey
14 Nominated Member Josep Raventos Spain
15 Nominated Member Jamie Standing United Kingdom
16 Nominated Member Jonathan Gammon United Kingdom
17 Nominated Member Michael Bardanis Greece
18 Nominated Member PEDRO COVASSI Argentina
19 Nominated Member GEORGIOS BELOKAS Greece
20 Nominated Member MAURO CODEVILLA Argentina
21 Nominated Member Antoni Laque Spain
22 Corresponding Member Aliasger Haiderali United Kingdom
23 Nominated Member Mohamed Mohideen Sahabdeen Singapore
24 Corresponding Member ANDRE SILVA Portugal
25 Nominated Member Hisham Mohamad Malaysia
26 Nominated Member Vitor Santos Portugal
27 Nominated Member Nuno Silva Portugal
28 Nominated Member tan czhia yheaw Singapore
29 Nominated Member Skevi Perdikou Cyprus
30 Nominated Member Ian Solomon Hong Kong Special Administrative Region
31 Nominated Member Anil Joseph India
32 Nominated Member D. NEELIMA SATYAM India
33 Nominated Member Anthony (Tony) Simmonds United States
34 Nominated Member Laurent BRIANCON France
35 Nominated Member Fabien SZYMKIEWICZ France
36 Nominated Member Victor Lebedev Russia
37 Nominated Member Mark Talesnick Israel
38 Nominated Member Nikolay Milev Bulgaria
39 Nominated Member Leen De Vos Belgium
40 Nominated Member Yujie Wang China
41 Nominated Member Huafu Pei China
42 Corresponding Member Xingsan Shen China
43 Corresponding Member Jeff Wang Hong Kong Special Administrative Region
44 Corresponding Member Ruiwang Yu Hong Kong Special Administrative Region
45 Corresponding Member Chengyu Hong Hong Kong Special Administrative Region
46 Nominated Member Mahdi Miri Disfani Australia
47 Nominated Member Orhan Inanir Turkey
48 Nominated Member Pierre Choquet Canada
49 Nominated Member Michele Jamiolkowski Italy
50 Nominated Member Paolo Tommasi Italy
51 Corresponding Member Salvatore Grasso Italy
52 Corresponding Member Dario Peduto Italy

Contact Technical Committee : Field Monitoring in Geomechanics

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